The technical result is reached by expansion of the functional capabilities due to connection of modulating devices of different types in order to control the electron stream in the vacuum path 'photocathode-input'of the micro-channel plate (MCP); this considerably expands the functional and exploitation capabilities of the image-intensifiers of third generation.

The applied device comprises the image-intensifier of third generation and the high-voltage power supply, that are tied up in the monoblock (module) with the appropriate connections and outlets to outwardly connect to the photocathode, to the input of the multi-channel plate and to the input of the incorporated high-voltage power supply-to minus and to plus.

DESCRIPTION OF THE PRIOR ART The analogues of the applied invention are the following devices: - MX 1016, ITT INDUSTRIES Night Vision catalogue, 7635 Plantation Roud, Ruanoke, VA 24019, catalogue www. ittnv. com ; <BR> <BR> - AN/PVS-7B, AN/PVS-7A etc. , LITTONS Electro-Optical Systems catalogue, USA. 3414 Herrmann Drive Garland TX 75041-6188, www. nialltline-inc. com/nightline-nightvision.

The prior art of the invention is the image-intensifier'EPM-52G (image intensifier)' ["3TIM-52F (301I)"],"Cathode"Stock Company catalogue, 630047 Novosibirsk, Dorgomyjskogo ul. , 8a.

The above-mentioned image-intensifier is designed as the monoblock and it is tied up to the high-voltage power supply connected. The 'plus'/'minus'inputs of the power supply are flexible outlets from the monoblock. The zero-output of high-voltage power supply is connected to the MCP output of the image-intensifier. The high- voltage power supply has three outputs: two of them are minus- potential outputs; the third one is plus-potential output. The'plus'of output of the high-voltage power supply is connected to the outlet of the screen of the image-intensifier; the'minus'outputs of the high- voltage power supply are connected accordingly to the MCP input and the photo-cathode of the image-intensifier in ascending order.

The drawback of the prior art relating to design and connection circuit is impossibility to tie up some needful devices to modulate or to control the stream of photoelectrons between the photocathode and the MCP input.

BRIEF DESCRIPTION OF THE DRAWINGS Other advantages and features of the present invention will now be described in greater detail with reference to an exemplary embodiment, which is intended to explain and not to limit the invention, and is illustrated in the drawing, that is FIGURE 1 shows the indicated image intensifier consists of: 1-the monoblock 2-the image-intensifier of third generation 3-the high-voltage power supply 4-the outlet of the photocathode of the image-intensifier 5-the outlet of the MCP input of the image-intensifier 6-the outlet of the MCP output of the image-intensifier 7-the output of the screen of the image-intensifier 8-the U minus output of the high-voltage power supply 9-the U2 plus output of the high-voltage power supply 10-the Ur plus output of the high-voltage power supply 11-the outlet of the monoblock'the image-intensifier of the photocathode' 12-the outlet of the monoblock'the MCP input of the image- intensifier' 13-the outlet of the monoblock'the minus of Ujnput of the high- voltage power supply' 14-the outlet of the monoblock'the plus of Uinput of the high-voltage power supply' 15-the U nput minus of the high-voltage power supply 16-the Input plus of the high-voltage power supply DESCRIPTION OF THE PREFERRED EMBODIMENT The expansion of functional and exploitation capabilities of the image-intensifiers of third generation is reached due to there are three outputs of the high-voltage power supply (3) [-U, +U2 and +Ul, where U2<UJ. The image-intensifier (2) and the high-voltage power supply (3) are made as the monoblock (1).

The image-intensifier (2) has the outlets: the photocathode (4), the MCP input (5), the MCP output (6), the screen (7).

The output contacts (outlets) of the monoblock (1) are the outlets: the photocathode (11), the MCP input (12), the Uinput minus of the high- voltage power supply (13), the Uinput plus of the high-voltage power supply (14).

The outlet of the photocathode of the image-intensifier (4) is connected to the input contact of the monoblock of the photocathode (11) inside the monoblock; the outlet of the MCP input (5) of the image-intensifier (2) is connected to the output contact of the monoblock of the MCP input (12); the minus U output (8) of the high- voltage power supply is connected to the minus Input input (15) of the high-voltage power supply (3); the plus U2 output (9) of the high- voltage power supply (3) is connected to the MCP output (6) of the image-intensifier (2); the plus U, output (10) of the high-voltage power supply (3) is connected to the outlet of the screen (7) of the image-intensifier (2).

The device operates in the following way. Between the contacts (11) and (12) of the monoblock the modulating devices or the external power supply of the photocathode are set up to, providing the boosting potential for the photoelectrons between the photocathode and the MCP input of the image-intensifier (2), upon that the outlets (12) and (13) can be connected directly to or through the elements of the modulating device. Throwing the feed of the constant low voltage to the contacts (13) and (14), the high-voltage power supply (3) starts operation on, providing accelerating voltages at the MCP output (6) of the image-intensifier (2)'the plus U2'and the accelerating voltage at the screen (7) of the image-intensifier (2)'the plus U1'.

Using this design of the image-intensifier of third generation, that differs from the prior art by possibility to manage control of the electron stream between the photocathode and the MCP input of the image-intensifier (2) or to fully switch photocathode off, that enables the expand functional and exploitation capabilities of the image- intensifier of third generation and to develop absolutely new devices of small dimensions and high reliability of the monoblock of the image-intensifier.